Dombaj families are Croats and they are mostly from Varazdin area. In the past century, relatively most of Croatian residents bearing this family name were born in Varazdin area and in Koprivnica. In Cerje Tužno in Ivanec every seventh inhabitant had the family name Dombaj.
Prevalence
About 150 people with faimily name Dombaj live in Croatia today, in 70 households. There were 160 of them in the middle of the past century, and their number decreased by 10 percent. They are located in 10 Croatian counties, in 11 cities and 24 other places, mostly in Petrijanec in Varazdin area (25), Koprivnica (20), Drnje in Koprivnica area (20), Zagreb (10), and in Djelekovec in Koprivnica area (10).
Outside Croatia
Family name Dombaj (including: Dombai , Dombay ) is present in 23 countries worldwide.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.